I litterly learned a lot with this channel in very less time . Thank you from the bottom of my heart and I wish this channel will surely reach more subscribers.
Hello I'm looking for information regarding slowing down the growth of large hedges for some of my customers I really hope that you can share some information on RU-vid about this and how it works
Hormon adalah pembawa pesan kimiawi yang disintesis di suatu bagian untuk dikirim ke bagian lain. 5 jenis hormon utama yang mempengaruhi pertumbuhan tumbuhan 1. Auxin Auxin adalah hormon yang memungkinkan tumbuhan untuk bengkok ke arah cahaya (disebut juga fototropisme). Tropisme adalah pergerakan suatu organisme karena adanya rangsangan eksternal. Hormon auksin diproduksi di ujung batang dan bergerak ke bawah, oleh karena itu jika kita memotong ujung batang, tumbuhan akan kehilangan kemampuannya untuk tumbuh ke arah cahaya. 2. Giberelin Hormon giberelin sangat penting pada beberapa tahap perkembangan tumbuhan. Secara singkatnya hormon ini dibutuhkan tumbuhan untuk berkecambah,regulas dan membantu regulasinya, mempercepat perpanjangan internodus (batang yang terletak diantara ruas) yang merupakan tempat daun-daun tumbuh. 3. Sitokinin Hormon sitokinin mencegah tumbuhan dari penuaan. Hormon ini juga berperan penting dalam menghasilkan organ tumbuhan baru (root-shoot), diproduksi di meristem apikal akar atau ujung akar serta terbawa bersama air melalui jaringan xilem secara tidak langsung. Tumbuhan menggunakan rasio auksin dan sitokinin untuk menentukan pembentukan ke arah bawah (root) atau ke arah atas (shoot). Kelebihan auksin mendukung pembentukan ke bawah (root), sedangkan kelebihan kelebihan sitokinin mendukung pembentukan ke atas (shoot). Sitokinin juga bekerja sama dengan hormon yang akan dibahas berikutnya. 4. Etilen Etilen dibutuhkan untuk proses abscission daun, bunga atau buah. Etilen adalah hormon yang dapat merangsang pemasakan. Jika buah masak disatukan dengan buah lainnya yang belum masak, buah tersebut akan masak lebih cepat. Etilen adalah gas dengan daya larut rendah dalam air yang terdifusi keluar dari sel dan sebagian besarnya dihasilkan oleh sel yang tumbuh dan membelah dengan cepat. Ini penting untuk tanaman yang berkecambah karena produksi hormon etilen yang tinggi akan menghambat perkembangan daun. 5. Asam Absisat Asam Absisat adalah hormon yang menandakan dehidrasi. Hormon ini disintesis di kloroplas pada daun saat tumbuhan stres air, bergerak melalui xilem dan floem dan menyebabkan daun menutup stomata untuk mengurangi kehilangan air dari fototranspirasi. Itulah lima jenis hormon yang mempengaruhi pertumbuhan tanaman, meskipun masih banyak hormon yang lainnya.
This lectures was done 5 years ago and i hope you're still making more lecture videos. Im from Nigeria and i enjoyed your lecture. I just hope you're still in the system of doing this.. bless you greatly❤❤
Does anyone know how to extract and detect (maybe with chromatography...?) the auxin, gibberellin, and cytokinin levels of the plant with common high school laboratory apparatus? I think I could do the avena curvature test for auxin... but I'm wondering how to get quantitative data on the IAA amount. Thanks.
De novo abscisic acid (ABA) synthesis is initiated in plastids via the oxidative cleavage of xanthophylls. The cleaved product xanthoxin moves to the cytoplasm and is modified further in the cytoplasm to produce ABA. ABA is inactivated through multiple pathways either by oxidation or conjugation. Glucose-conjugated ABA (ABA-GE) and phaseic acid (or it's reduced form dihydrophaseic acid) are the major inactive forms of ABA. Lee et al. (2006)demonstrate that the intracellular β-glucosidase AtBG1 cleaves ABA-GE to produce ABA as a new route of ABA production under osmotic and drought stress conditions and during day/night cycles. The activity of AtBG1 is enhanced by the polymerization of this enzyme, which is induced by these environmental factors. Therefore, the cleavage of ABA-GE is proposed as an alternative route for rapid ABA synthesis in response to changes in stress and light conditions.
More auxins promotes more roots? I thought the opposite. I thought cytokinins produced more roots and auxins promoted shoots? Could you explain any further?
Hi Rifa! :-) Thanks for the suggestions! Will add to my list! I have a video on photosynthesis: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-DlZh_Gzb7tI.html
1:25 if the plant has 5 petals doesnt that mean its dicot and should have a taproot system i am not tryna point out a mistake i just wanna see if im kinda smart and actually know some stuff lol
De novo abscisic acid (ABA) synthesis is initiated in plastids via the oxidative cleavage of xanthophylls. The cleaved product xanthoxin moves to the cytoplasm and is modified further in the cytoplasm to produce ABA. ABA is inactivated through multiple pathways either by oxidation or conjugation. Glucose-conjugated ABA (ABA-GE) and phaseic acid (or it's reduced form dihydrophaseic acid) are the major inactive forms of ABA. Lee et al. (2006)demonstrate that the intracellular β-glucosidase AtBG1 cleaves ABA-GE to produce ABA as a new route of ABA production under osmotic and drought stress conditions and during day/night cycles. The activity of AtBG1 is enhanced by the polymerization of this enzyme, which is induced by these environmental factors. Therefore, the cleavage of ABA-GE is proposed as an alternative route for rapid ABA synthesis in response to changes in stress and light conditions.
Fast narration.let it be slow for the sake of students. More videos on individual topics on harmones for the benefit of students. Thank you very much for your help.
Noted! Thank you very much for the suggestions. I will attempt to make the narration slower in future videos and will try to make more videos on plant hormones :-)
